Method and apparatus for fingerprint identification and electronic device

1. A method for fingerprint identification, wherein the method is applied to an electronic device comprising M fingerprint sensors, each fingerprint sensor corresponds to one sensing region, sensing regions of the M fingerprint sensors constitute a fingerprint detecting region of the electronic device, and the method comprises:

acquiring pressing information of a finger in the fingerprint detecting region;

determining a target sub-region among N sub-regions according to the pressing information, wherein the N sub-regions cover the fingerprint detecting region, M and N are positive integers greater than 1, and N>M, the N sub-regions comprise a sub-region that at least partially overlaps with a sensing region of only one fingerprint sensor and a sub-region that at least partially overlaps with sensing regions of a plurality of fingerprint sensors; and

determining a data acquiring region according to the target sub-region, where fingerprint data in the data acquiring region is used for fingerprint identification.

2. The method according to claim 1 , wherein the pressing information comprises a center of gravity of pressing of the finger, and

the determining the target sub-region among the N sub-regions according to the pressing information comprises:

determining a sub-region where the center of gravity of pressing is located as the target sub-region.

3. The method according to claim 1 , wherein an area of the data acquiring region is equal to an area of a sensing region of one fingerprint sensor.

4. The method according to claim 1 , wherein when the target sub-region at least partially overlaps with a sensing region of only one fingerprint sensor, the data acquiring region is the sensing region of the fingerprint sensor.

5. The method according to claim 1 , wherein when the target sub-region at least partially overlaps with sensing regions of a plurality of fingerprint sensors, the data acquiring region is constituted by parts of the respective sensing regions of the plurality of fingerprint sensors.

6. The method according to claim 5 , wherein when the target sub-region at least partially overlaps with sensing regions of K adjacent fingerprint sensors, the data acquiring region comprises 1/K of each of the sensing regions of the K fingerprint sensors, K≤M.

7. The method according to claim 1 , wherein the N sub-regions do not overlap with each other.

8. The method according to claim 1 , wherein the M fingerprint sensors are arranged in a single row or in an array.

9. The method according to claim 8 , wherein when the M fingerprint sensors are arranged in a single row, the N sub-regions are arranged in a single row, N=2M−1, wherein the 2i+1-th sub-region covers sensing regions of respective edge portions of two adjacent fingerprint sensors, and the 2i-th sub-region only covers a sensing region of a middle portion of one fingerprint sensor, 1≤i≤(N−1)/2.

10. The method according to claim 8 , wherein when the M fingerprint sensors comprise m rows×n columns of fingerprint sensors, the N sub-regions comprise (m+1) rows×(n+1) columns of sub-regions, wherein sub-regions in the first and last rows and the first and last columns of the N sub-regions cover a sensing region of an edge portion of one fingerprint sensor or sensing regions of respective edge portions of two adjacent fingerprint sensors, and sub-regions other than the sub-regions in the first and last rows and the first and last columns cover sensing regions of respective edge portions of four adjacent fingerprint sensors.

11. An apparatus for fingerprint identification, wherein the apparatus comprises a processor and a fingerprint module comprising M fingerprint sensors, each fingerprint sensor corresponds to one sensing region, and sensing regions of the M fingerprint sensors constitute a fingerprint detecting region of the apparatus, and the processor is configured to:

acquire pressing information of a finger in the fingerprint detecting region;

determine a target sub-region among N sub-regions according to the pressing information, wherein the N sub-regions cover the fingerprint detecting region, M and N are positive integers greater than 1, and N>M, the N sub-regions comprise a sub-region that at least partially overlaps with a sensing region of only one fingerprint sensor and a sub-region that at least partially overlaps with sensing regions of a plurality of fingerprint sensors; and

determine a data acquiring region according to the target sub-region, wherein fingerprint data in the data acquiring region is used for fingerprint identification.

12. The apparatus according to claim 11 , wherein the pressing information comprises a center of gravity of pressing of the finger, and

the processor is configured to: determine a sub-region where the center of gravity of pressing is located as the target sub-region.

13. The apparatus according to claim 11 , wherein an area of the data acquiring region is equal to an area of a sensing region of one fingerprint sensor.

14. The apparatus according to claim 11 , wherein when the target sub-region at least partially overlaps with a sensing region of only one fingerprint sensor, the data acquiring region is the sensing region of the fingerprint sensor.

15. The apparatus according to claim 11 , wherein when the target sub-region at least partially overlaps with sensing regions of a plurality of fingerprint sensors, the data acquiring region is constituted by parts of the respective sensing regions of the plurality of fingerprint sensors.

16. The apparatus according to claim 15 , wherein when the target sub-region at least partially overlaps with sensing regions of K adjacent fingerprint sensors, the data acquiring region comprises 1/K of each of the sensing regions of the K fingerprint sensors, K≤M.

17. The apparatus according to claim 11 , wherein the N sub-regions do not overlap with each other, and the M fingerprint sensors are arranged in a single row or in an array.

18. The apparatus according to claim 17 , wherein when the M fingerprint sensors are arranged in a single row, the N sub-regions are arranged in a single row, N=2M−1, wherein the 2i+1-th sub-region covers sensing regions of respective edge portions of two adjacent fingerprint sensors, and the 2i-th sub-region only covers a sensing region of a middle portion of one fingerprint sensor, 1≤i≤(N−1)/2.

19. The apparatus according to claim 17 , wherein when the M fingerprint sensors comprise m rows×n columns of fingerprint sensors, the N sub-regions comprise (m+1) rows×(n+1) columns of sub-regions, wherein sub-regions in the first and last rows and the first and last columns of the N sub-regions cover a sensing region of an edge portion of one fingerprint sensor or sensing regions of respective edge portions of two fingerprint sensors, and sub-regions other than the sub-regions in the first and last rows and the first and last columns cover sensing regions of respective edge portions of four adjacent fingerprint sensors.

20. An electronic device comprising an apparatus for fingerprint identification, wherein the apparatus comprises a processor and a fingerprint module comprising M fingerprint sensors, each fingerprint sensor corresponds to one sensing region, and sensing regions of the M fingerprint sensors constitute a fingerprint detecting region of the apparatus, and the processor is configured to:

acquire pressing information of a finger in the fingerprint detecting region;

determine a target sub-region among N sub-regions according to the pressing information, wherein the N sub-regions cover the fingerprint detecting region, M and N are positive integers greater than 1, and N>M, the N sub-regions comprise a sub-region that at least partially overlaps with a sensing region of only one fingerprint sensor and a sub-region that at least partially overlaps with sensing regions of a plurality of fingerprint sensors; and

determine a data acquiring region according to the target sub-region, wherein fingerprint data in the data acquiring region is used for fingerprint identification.